BA 893 then AI 130 at Heathrow
Sofia → London → Mumbai
Timetable, London time
22:30BA 893 from Sofia at the gate
20:30AI 130 to Mumbai leaves the gate
22 h apart on the timetable, overnight
AI 130 leaves 22 h after BA 893 arrives on the timetable: more than half a day, so not a connection we count.